Final answer:
President Johnson used the second paragraph of his speech to introduce the effect of the Civil Rights Act and the concept of the Great Society, employing rhetorical strategies to engage and persuade his audience.
Step-by-step explanation:
The student has asked about how President Lyndon Johnson used the second paragraph of his speech to establish his purpose. In Johnson's address upon signing the 1964 Civil Rights Act, he aimed to explain the impact of the Civil Rights Act on American citizens. This was part of his broader initiative to promote the Great Society, which was an ambitious series of domestic programs with the goal of ending poverty and racial injustice.
Johnson often employed rhetorical strategies such as appeals to pathos, use of rhetorical questions, and establishing context to connect with his audience and emphasize the significance of political justice. For example, he personalized his message by connecting it with the legacy of the nation's founders and the responsibility of the current generation to carry out visions of equality and societal improvement.